Re: [PATCH v1 2/4] arm64: dts: qcom: glymur: Make the ADSP remote heap no-map

[Konrad Dybcio]

On 10/15/26 9:15 AM, Jianping Li wrote:
> The ADSP remote heap is declared as a reusable shared DMA pool.
> Allowing the kernel to reuse this region is incompatible with handing
> the entire region over to the DSP, as HLOS allocations may then access
> memory for which HLOS no longer has access permissions.
> 
> The same configuration has caused synchronous external aborts on
> other platforms when the kernel accesses pages within the ADSP remote
> heap.
> 
> Replace reusable with no-map to keep the region reserved for the DSP
> and exclude it from the kernel's standard memory mapping.
> 
> Fixes: 67641246eabd0 ("arm64: dts: qcom: glymur: Add memory-region for audio PD")
> Link: https://lore.kernel.org/all/20260701-glymur-audio-v1-1-2c3862d95a09@xxxxxxxxxxxxxxxx/
> Signed-off-by: Jianping Li <jianping.li@xxxxxxxxxxxxxxxx>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad